Tool for preparing valve-seats.



PATBNTBD PEB'. 5, 1907.

. SfM. HALL.

TOOL FOR PREPARING VALVE SEATS.

APILIOATION FILED APB. 29.1906.

2 SHEETS-SHEET 1.

M w M No. 842,952. PATENTED FEB. 5, 1907.

v S. M. HALL.

TOOL FOR PREPARING VALVE SEATS. APPLIoA'rIoN FILED A1=1z.29,19o5.

2 SHEETS-SHEET 2.

IINITEIO` STATES PATENT OEEICE.

SAMUEL M HALL, OE CHICAGO, ILLINOIS, ASSICNOR O\E..,oNE-HALE To THOMAS CULLEN, OF CHICAGO, ILLINOIS.

TOOL FORv PREPARING VALVE-SEATS.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed April 29, 1905. Serial No. 258,124.

preparation of valve-seats generally.

One of the particular objects of my invention is to provide a simple and highlyefficient tool for accomplishing this purpose and to so Construct the parts as to make the toolreadily adjustable to work of various dimensions and readily adaptable to the various different forms of pipe in which it is necessary to form or modify the valve-seat.

invention is to "construct a valve-seatingtool in which the parts are so assembled Vas to i make the tool adaptableto use with various forms of dies for cutting the face of the valveseat and to construct the tool in such manner that these various dies may be readily removed and others substituted whenever it becomes necessa for an ur ose to chan e TY yg P g the character of the die use These and other particular objects of my invention will appearmore clearly from thesigned to o erate, together with a view elev ation of t e tool attached to this valve,'and showing in a general way the manner iny which the tooloperates. 2 is a sectional view elevation ofthe tool, showing the as- -sembling of its various parts.

Fig. 3 is a sectional view of the tool along line 3 3 in Fig. L2. Fig.. 4 is a sectional view upon the line 4 4 in Fig. 2, showing the guide-bar as shown in per surface ofthe cutter-head. Fig. 6 is a view of the lower surfacer of the cutter-head with one form ofthe dies inserted. Fig. 7 is a sectional view o'n line 7 '7 in Fig; 5,' showing the manner in which the cutter-head is adapted to hold the various dies which it may be 'necessary to use.. Fig. 8 showsthecuttervhead in perspective. Fig. 9 is a detail of the A further and more particular obj eet of my i 1 outer sleeve, showing by its various parts one of the means for adapting the tool to various sizes of work. Fig. 10 showsa sectional view of a device designed as a guide to be used on the outer end of the dies or millingtools when the valve-seats have extraordinarily large openings. C

In Fig. 1, A is 'the handle of the tool by which. the rotation of the dies is accomplished.

- B is a thumb-screw threaded upon the inner shaft C of Fig. -2 and shows the means by which the'handle A is held in engagement with the ratchet-wheel D of Fig. 3.' Y

E, E', and E2 show the various sections of the sleeve surrounding the inner shaft C. These formthe connecting or ower-transmittin 'device between the han le 'A and the cutteread K. The sleeve E is provided at its upper end 4with asquare shank e, which is inserted in the .ratchet-wheel D. The handle A' is provided'in its socket A with a ratchet dog or fpawl a, pivoted at a and adapted to engage Vthe ratchet-wheel D, thus imparting rotary motion thereto in either direction, as may be desired. The sleeve E, E', and E2 is surrounded by a second sleeve I, threadedv upon its outer surface and' adapted to enga e in .the threaded` bur ofthe 'de-bar Cr of Flg. 4. The sleeve E2 is provieud at its upper end with a collar ez, which rests against the lower` end of the outer sleeve I and provides a means for adjusting to the distance between the Hide-bar G and the face of the valveseat thereby affording a means for adjusting the tool to valves of various dimenslons. The sleeve I is provided witha knul'led flange i, thus affording a means for adjusting its position within the guide-bar Cr. The sleeve E2 is provided at its lower end with lugs e3, adapted to engage any suitable sockets c of the cutter-head K, thereby aording a powertransmitting connection between the handle A and the cutter-head K.. The cutter-.head K is provided on its lower surface. with grooves or guideways 7c', in which are placed the milling-tools or 'diesL. The milling-tools or dies L are held in the desired position by bolts Z, which are engaged in suitably-provided slots lf2 in the cutter-headA K and are daited to adjustment radially in the cutterea Y IOO

its lower end with a threaded lugv c, adapted to engage inthe inner shaft C; The inner shaft() is also provided at its lower. end with a threaded lug c2, adapted 'to engage in the threaded bur fm of the central portion of the valve-seat M. p j

N of Fig. represents a guide attachment for the dies or milling-tools, designed to `be attached to their outer ends for the purpose of holding them rigid when theredis no central portion m to the valve-seat. This guide attachment N (shown here 'as a square collar) is provided with a set-bolt n, by which it may be rigidly attached to. the dies or millingtools, thus holding the dies in place in the guideways lc. Another method of using this guide attachment N is to so construct it that it will set over the entire arm of the cutterhead K and be rigidly attached to the arm of said cutter-head and adjusting this guide attachment N in such a Way that it will rest upon the inner face of the annular part of the' valve-seat- It will thus readily be observed that I provide means for adjusting and 'adapting my.

invention to almost all possible shapes, sizes, and Ydescriptions of valves which come within By adjustment j the work of a steam-fitter. of the thumb-screw Bithe cutter-head K can be adjusted tothe face of the valve and its pressure thereon regulated at the will of the operator, and by inserting the pin b in the opening b, provided in the .threaded inner shaft U, the threaded llug c can be engaged 3 5 with the lower inner shaft C", and by providing a suitable pin toY engage the opening c3. the inner shaft C may be backed ofl1 and anf other lower shaft C', lprovidedwith a suitable threaded lugcz, may be substituted for the purpose of adapting the thread and dimensions of thislower threaded lug c? to t the threaded bur m of `the various valveseats u on which it may be desired to opeiate. other means for adjustment isA provided for in the outer sleevesI, byvwhich adv justments can be secured, and thepressure of the dies or milling-tools L upon the face of the valve-seat M may be regulated.V The guide-bar G is provided with slots i), adapted 5o to engage suitable bolts H, by which the-entire tool is attached to the valve upon'which itis desired to operate, the slots being long enough to afford lateral adjustment to valves of various shapes and dimensions.

I 5 5 It will thus be seen that I provide atool for preparing and operating upon valve-seats which 1s' readily adaptable to various forms of valves, highly efficient in its operation,

and makes it possible to prepare or repair 6ol valve seats Without removing the ,valve from the machine to which they are attached.

It will readily appear that by my construction of the sleeve E, E', and E2 in interchangeable sections I provide a tool in which the guide-bar Gr` may be shifted 'longitudinally vinterchangeable sections surrounding said with respect to the shaft C, accordingly as. the dimension of the valve to be operated requires this guide-bar to be near or far from the cutter-head K. If the dimensions of the work require or if it be more convenient to operate, the position of the guide-bar and the section of the sleeve E2 may be interchanged with the position of the handle A and the section E, as now shown in Fig. 2. Then, too, in case it is desired for any reason to use the tool without the guide-bar G the operator can by providing an external bearing for the upper end of the shaft C use the thumb-screw B for adjusting the pressure of the cutter-head upon the valve-seat, and by' means of the in- 8o terchangeable sectionsE, E', and E2 the han,- dle Amay be brought as near the cutter-head as is possible or convenient to work, and thus reduce .to a minimum the liability of wrenching the tool out of perpendicularto the plane 1 of the valve-seat.

What I claim as my invention is 1. A tool for preparing valve-seats comprising an axial shaft adapted to be secured to a valve, a series of interlocking sections '96 surrounding said shaft whereby the range of l operation of said tool may be varied, a cut- 'terA-head rotatable about said shaft, and

means for imparting rotary motion through the interlocking sections to said cutter-head. 9 5

2. A toolfor preparing valve-seats comprising an axial shaft adapted to be secured to a valve', longitudinally-adjustable means for securing said shaft to a valve, a series ol' interlocking sections surroundin said shaft, loo a cutter-head rotatable about said shaft, arranged to receive motion from said sections, and means, adapted to be connected with said sections for' imparting rotary motion to said cutter-head.

3. A tool for preparing valve-seats comprising an axial shaft adapted to, be secured to a valve, longitudinally-adjustable means for securing said shaft toa valve, a 'seriesof shaft,-means for interlocking said sections together, a cutter-head rotatable about said shaft, arranged to receive motion from said sections, and'means adaptedto be connected with said sections for imparting rotary mo'- tion to said cutter-head.

4. A tool for 'preparing' valve-seats cpmprising an axial shaft adapted to be vsecured to a valve, longitudinally-adjustable means for 'securing said shaft to a valve, a series of interchangeable sections \surrounding -said shaft, meansin'tegral with said sections for interlocking said sections together, a cutterheadrotatable about said shaft, arranged to receive motion from said sections, and means adapted to be connected with said sections for lmparting rotary motion to said cutterhead. r

5. A tool for preparing valve-seats com' prising an axial shaft adapted to be-secured to a valve, longitudinally-adjustable means for securing said shaft to a valve, a series of interchangeable sections surrounding said shaft, means integral with said sections for interlocking said sections together, a cutterhead rotatable about said shaft arranged to receive motion from said sections, millingtools iXed in said cutter-head, and means adapted to be connected With said sections for imparting rotary motion to said cutterhead, said sections constituting power-transmitting connection between said means and said cutter-head.

6. A tool for preparing valve-seats comprising an axial shaft adapted to be secured to a valve, a sectional sleeve, and avcutterhead mounted to turn about said shaft, milling-tools .adjustably secured to said head, the sections of said sleeve and cutterhead being provided with interchangeable interlocking means, one of said sections being modied to receive devices for imparting rotary motion to said cutter-head.

Signed by me at Chicago, Cook county, Illinois, this 15th day ofApril, 1905.

SAMUEL M. HALL. 

